IT'S NEVER TOO LATE TO START AGAIN. AND AGAIN. It's always awkward when five thousand kronor goes missing. When it happens at a certain grotty hotel in south Stockholm, it's particularly awkward because the money belongs to the hitman currently staying in room seven. Per Persson, the hotel receptionist, just wants to mind his own business, and preferably not get murdered. Johanna Kjellander, temporarily resident in room eight, is a priest without a vocation, and, as of last week, without a parish. But right now she has two things at her disposal: an envelope containing five thousand kronor, and an excellent idea . . .